We divide 619409 by 25
The aim is to understand the frequency of 25 in 619409.

On to step 1:
When dividing 6 by 25, we get 0 with a remainder of 6.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 6, we get 6.
Take the next digit (1) from the dividend and append it to 6, then repeat: 61 / 25

Going ahead to step 2:
61 divided by 25 is 2 with a remainder of 11.
The next digit of our result is 2. 
Result so far: 2.0
Subtract 50 from 61 to get 11.
Include the next digit (9) from the dividend after 11, then repeat: 119 / 25

Let's proceed to step 3:
25 can be fit into 119 4 times, resulting in a remainder of 19.
The next digit of our result is 4. 
Result so far: 24.0
If we subtract 100 from 119, we get 19.
Append the next digit (4) from the dividend to 19 and continue with: 194 / 25

Moving on to step 4:
The number 25 fits into 194 7 times, leaving a remainder of 19.
Put 7 as the next digit of the answer. 
Result so far: 247.0
If we subtract 175 from 194, we get 19.
Append the next digit (0) from the dividend to 19 and continue with: 190 / 25

Going ahead to step 5:
If we divide 190 by 25, we get 7 and a remainder of 15.
Put 7 as the next digit of the answer. 
Result so far: 2477.0
If we take 175 away from 190, we end up with 15.
Bring next digit (9) of the dividend behind the 15 and repeat the process: 159 / 25

Moving on to step 6:
When dividing 159 by 25, we get 6 with a remainder of 9.
The number 6 becomes the next digit in our result. 
Result so far: 24776.0
If we subtract 150 from 159, we get 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Step 7:
When dividing 90 by 25, we get 3 with a remainder of 15.
Put 3 as the next digit of the answer. 
Result so far: 24776.3
If we take 75 away from 90, we end up with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Going ahead to step 8:
150 divided by 25 is 6 with a remainder of 0.
The next digit of our result is 6. 
Result so far: 24776.36
Subtracting 150 from 150 leaves us with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Step 9:
If we divide 0 by 25, we get 0 and a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 24776.36
Deduct 0 from 0 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Let's proceed to step 10:
25 goes into 0 0 times with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 24776.36
The remainder is 0 after subtracting 0 from 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Our division results in 24776.36 with a remaining 0.0.